Analysis Version
v1
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assertion
Analysis v1
Supported

Your body burns more calories digesting protein than carbs or fat.

61
Pro
42
Against

Evidence from Studies

Supporting (2)

61

Community contributions welcome

56

Effects of Varying Protein Amounts and Types on Diet-Induced Thermogenesis: A Systematic Review and Meta-Analysis

Systematic Review With Meta-Analysis
Human
2024 Dec

This study found that eating more protein makes your body burn more calories just to digest it, compared to eating the same amount of carbs or fat — which is exactly what the claim says.

46

Postprandial Thermogenesis Is Increased 100% on a High-Protein, Low-Fat Diet versus a High-Carbohydrate, Low-Fat Diet in Healthy, Young Women

Randomized Controlled Trial
Human
2002 Feb

This study found that eating a lot of protein makes your body burn more calories after meals than eating a lot of carbs, which is exactly what the claim says — protein takes more energy to process.

Contradicting (2)

42

Community contributions welcome

42

Brown fat-associated postprandial thermogenesis in humans: Different effects of isocaloric meals rich in carbohydrate, fat, and protein

Cross-Sectional Study
Human
2022

The study found that eating protein burns more calories after eating than eating carbs or fat, which matches the claim — but it shows this isn’t because of a special fat-burning tissue in the body (BAT), as the claim might suggest. So the result is right, but the reason given in the claim is wrong.

31

Meals with similar energy densities but rich in protein, fat, carbohydrate, or alcohol have different effects on energy expenditure and substrate metabolism but not on appetite and energy intake

Cross-Sectional Study
Human
2003 Jan

The study found that eating protein didn’t make your body burn significantly more calories than eating carbs or fats, even though some people think it does. So, the claim that protein burns way more calories isn’t backed by this research.

Similar Assertions

Diet-induced thermogenesis is significantly higher for dietary protein compared to carbohydrates and fats due to the greater metabolic cost of protein absorption, transport, and amino acid metabolism.

61
42
99%

Your body uses a lot more energy to digest protein than it does to digest carbs or fat — up to 30% of the calories from protein are used just for digestion, while fat barely uses any.

1
0
92%

Eating more protein makes your body burn a bit more calories just to digest it, compared to eating less protein.

20
0
82%

Chronic elevation of protein intake above optimal levels for muscle synthesis does not sustainably increase diet-induced thermogenesis, despite acute thermogenic effects.

56
60
81%

Increased total daily energy expenditure from high-protein diets is mediated by elevated fat-free mass resulting from enhanced muscle protein synthesis, not by sustained diet-induced thermogenesis.

0
56
81%

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